Blumhouse's Killer Pool Movie Gets a Genuinely Terrifying New Trailer

The first trailer for the new James Wan/Blumhouse production, Night Swim, already creeped us out. Two teens playing Marco Polo in the dark and a demon joins in? Freaky. Now, the full trailer is here and it reveals that the teaser was just the tip of the iceberg. What hides beneath the surface is far, far more...